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OpenSTLinux distribution
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==What is the OpenSTLinux distribution?== The OpenSTLinux distribution, running on the Arm<sup>®</sup> Cortex<sup>®</sup>-A processor(s), is a sub-part of the [[STM32MPU Embedded Software distribution]]. [[File:OpenSTLinux distribution.png|thumb|200px|link=]] OpenSTLinux is a Linux<sup>®</sup> distribution based on the [[OpenEmbedded]] build framework.<br> It includes the following collection of software components: * [[OpenSTLinux BSP architecture overview|OpenSTLinux BSP]] (OP-TEE secure OS, boot chain and Linux kernel) * Application frameworks such as the following Linux application frameworks (non-exhaustive list): ** [[Wayland Weston overview|Wayland-Weston]] as a display/graphic framework ** [[GStreamer_overview|Gstreamer]] as a multimedia framework ** [[ALSA overview|Advanced Linux Sound Architecture (ALSA)]] libraries As explained in the [[OpenEmbedded]] article, the files used to build an image are stored in layers that come from different sources, and that are configured for this image. <br> Only layers specific to the OpenSTLinux distribution (for example the OpenSTLinux Board Support Package layer) are detailed in the [[#Layers|Layers]] chapter below. Community layers referenced in this article are not listed. {{ReviewsComments| JLD (product maketing): today:The diagram inludes Yocto while not described into the above comment. That might drive some confusion..Is Yocto included into the distro or not??}} The [[#Machines|Machines]] chapter introduces the machine metadata (the information needed to build a kernel for specific target boards), while the [[#Images|Images]] chapter specifies the images that contain the information needed to build the user space. The [[#Distros|Distros]] chapter describes the available distros configurations. ==Software architecture overview== The figure below gives an overview of the [[OpenSTLinux architecture overview|OpenSTLinux architecture]]. You can obtain more details by clicking on one of the sub-levels.<br> The '''Linux application frameworks''' (or Linux user space components) that rely on the [[OpenSTLinux BSP architecture overview|OpenSTLinux BSP]], mainly come from open-source communities. OpenEmbedded core components (community layers) combined with STMicroelectronics-specific layers (for example the BSP layer) give a consistent starting point to develop customer applications based on a standardized interface. {{:OpenSTLinux architecture overview}} ==OpenSTLinux concept== To build an OpenSTLinux based software, a combination of machine, image and distro must be selected.<br> Available machines, images and distros are listed below. More information on how to compile and use an OpenSTLinux distribution can be found in the '''Distribution Package''' articles available in [[:category:Distribution Package]]. ===Layers=== This chapter describes the layers developed by STMicroelectonics. {{ReviewsComments| JLD (product marketing): Today: I think there is a different hirarchy to take into account between Layers / machine & image & distro... Machine should not be 3.1.1, image 3.1.2 etc..}} STMicroelectronics' strategy is to organize the layers in order to split BSP descriptions from applications and frameworks.<br> By doing this, any BSP can be combined with any framework, or no framework at all. {| class="st-table" style="text-align: left; " |- ! align="center" valign="center"| Layer ! align="center" valign="center"| Description |- | meta-st-stm32mp || BSP Layer for stm32mp |- | meta-st-openstlinux || OpenSTLinux layer - framework/image settings |} For the detailed content of the layers, please check [[STM32MP15_OpenSTLinux_release_note#Detailed delivery content]] In addition, in OpenSTLinux distribution, a layer (meta-st-stm32mp-addons) has been created to manage STM32CubeMX integration.<br> If necessary, you can also create your own layer. The procedure to do so is explained in [[How_to_create_a_new_open_embedded_layer]]. {| class="st-table" style="text-align: left; " |- ! align="center" valign="center"| Layer ! align="center" valign="center"| Description |- | meta-st-stm32mp-addons || BSP Layer addons for stm32mp (CubeMX Machine) |- | meta-my-custo-layer || framework addons/customization |} ===Machines=== {| class="sttable" style="text-align: left; " |- ! align="center" valign="center"| Machine ! align="center" valign="center"| Description |- | stm32mp1 || Machine configuration for STM32MP1 microprocessor device boards |- | stm32mp1-eval || Machine configuration for STM32MP1 evaluation board |- | stm32mp1-disco || Machine configuration for STM32MP1 disco board |} ===Images=== {| class="st-table" style="text-align: left; " |- ! align="center" valign="center "| Image ! align="center" valign="center "| Description |- !! colspan="2" | '''Official images''' |- | st-image-weston || OpenSTLinux weston image with basic Wayland support (if enabled in distro) |- !! colspan="2" | '''Supported images''' |- | st-image-core || OpenSTLinux core image |- !! colspan="2" | '''Images, proposed as example only''' |- | st-example-image-qt || ST example of image based on QT framework |- | st-example-image-x11 || ST example of image based on X11 |- | st-example-image-xfce || ST example of image based on XFCE framework |- | st-example-image-gtk || ST example of image based on GTK framework |} ===Distros=== For further details on distributions (distros), read "Creating a distribution" <ref> http://www.yoctoproject.org/docs/2.4/mega-manual/mega-manual.html#creating-your-own-distribution Creating a distribution </ref> {| class="st-table" style="text-align: left;" |- ! align="center" valign="center "| Distro ! align="center" valign="center "| Description |- | openstlinux-eglfs || OpenSTLinux featuring eglfs - no X11, no Wayland |- | openstlinux-weston || OpenSTLinux featuring Weston/Wayland |- | openstlinux-x11 || OpenSTLinux featuring X11 |- | nodistro || *** DEFAULT OPENEMBEDDED SETTING : DISTRO is not defined *** |} ===Reference source code=== The TF-A, U-Boot, OP-TEE and kernel components have been configured by default to use '''tarball + patches''' for source code. If you prefer to use '''github'''<sup>®</sup> as a source code reference, you need to update your local.conf file Refer to the section ‘Configure STM32MP default version to github’ in local.conf : # ========================================================================= # Configure STM32MP default version to github # ========================================================================= #STM32MP_SOURCE_SELECTION_pn-linux-stm32mp = "github" #STM32MP_SOURCE_SELECTION_pn-optee-os-stm32mp = "github" #STM32MP_SOURCE_SELECTION_pn-tf-a-stm32mp = "github" #STM32MP_SOURCE_SELECTION_pn-u-boot-stm32mp = "github" Then just uncomment the line to switch the component to github<sup>®</sup> for source code. ==How to get the software for this distribution== The OpenSTLinux distribution is available through the three Packages (Starter, Developer, and Distribution) of the [[STM32MPU Embedded Software distribution|STM32MPU Embedded Software distribution]]. ==References== <references/> <noinclude> [[Category:OpenSTLinux distribution|00]] {{PublicationRequestId | 8358 | 2018-06-18 | PhilipS}} </noinclude>
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